Chains and heterogens:
PDB Chain Sequences:
>1c4aA (A:) mktiiingvqfntdedttilkfardnnidisalcflnncnndinkceictvevegtglvt acdtliedgmiintnsdavnekiksrisqlldihefkcgpcnrrenceflklvikykara skpflpkdkteyvdersksltvdrtkcllcgrcvnacgkntetyamkflnkngktiigae dekcfddtncllcgqciiacpvaalsekshmdrvknalnapekhvivamapsvrasigel fnmgfgvdvtgkiytalrqlgfdkifdinfgadmtimeeatelvqrienngpfpmftscc pgwvrqaenyypellnnlssakspqqifgtasktyypsisgldpknvftvtvmpctskkf eadrpqmekdglrdidavittrelakmikdakipfakledseadpamgeysgagaifgat ggvmeaalrsakdfaenaeledieykqvrglngikeaeveinnnkynvavingasnlfkf mksgminekqyhfievmachggcvngggqphvnpkdlekvdikkvrasvlynqdehlskr kshentalvkmyqnyfgkpgegraheilhfkykk